MECHANICAL DEFEATER INSTALLATION
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MECHANICAL DEFEATER (MDV)
- MECHANICAL DEFEATER FOR VARIABLE DEPTH AND CABLE OPERATED FLANGE MOUNT
DISCONNECTS.
-THE INTENT AND PURPOSE OF THIS DEVICE IS TO ADD AN ADDITIONAL LEVEL OF SAFETY.
REQUIRING THE PRIMARY DOOR LATCH OR HANDLE TO CLOSE AND ENGAGE BEFORE THE
DISCONNECT IS TURNED ON.
-THIS IS ACHIEVED BY A MECHANICAL DEVICE CALLED AN “MDV” THAT IS INSTALLED ON
THE INSIDE OF THE ENCLOSURE FLANGE.
-ALL OF THE PARTS NECESSARY FOR THE INSTALLATION ARE
INCLUDED IN THE “MDV” KIT PROVIDED WITH YOUR DISCONNECT
ENCLOSURE, AND PARTS INCLUDED WITH YOUR DISCONNECT
OPERATOR HANDLE.
-THE TOOLS REQUIRED FOR INSTALLATION ARE:
PHILLIPS SCREW DRIVER
7/16” AND 11/32” WRENCH
WIRE CUTTERS
(A)- ASSEMBLY-1
(B)- ASSEMBLY-3
(C)- ASSEMBLY-4
(D)- ITEM-2
MECHANICAL DEFEATER INSTALLATION
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NOTE: IN ORDER TO INSTALL THE “MDV” YOU WILL NEED
TO INSTALL THE DISCONNECT HANDLE AND MOUNTING
PLATE LEAVING THE TWO FASTENERS LOOSE.
1.-FIRST ADJUST THE “MDV” TO YOUR FLANGE SIZE.
LOCATION A - USED ONLY IN SOME RARE CUSTOM
APPLICATIONS. REMOVE THE 8-32 NUTS, POSITION
AT THE OUTER HOLES & TIGHTEN.
LOCATION B - USED WITH 3.00" & 3.50" FLANGE
SIZES, FOUND ON MOST FREESTANDING
ENCLOSURES. THIS IS THE PRESET LOCATION.
LOCATION C - USED WITH 2.75" FLANGE, FOUND ON
MOST WALL MOUNT ENCLOSURES. SIMPLY LOOSEN
THE TWO 8-32 NUTS, SLIDE OUT, AND RE-TIGHTEN
THE NUTS.
2. -INSERT (ASSEMBLY 1) OF THE “MDV” KIT BETWEEN
THE ENCLOSURE FLANGE AND DISCONNECT MOUNTING
PLATE AND TIGHTHEN THE FASTENERS, MAKING SURE
THAT THE MDV LEVER MOVES FREELY UP AND DOWN.
MECHANICAL DEFEATER INSTALLATION
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3. -INSTALL THE DEFEATER (ITEM 2) TO THE
DISCONNECT HANDLE.
THIS IS A DEFEATER PROVIDED BY EVERY
DISCONNECT MANUFACTURER WITH THE
DISCONNECT OPERATING HANDLE. A
UNIVERSAL VERSION IS PROVIDED WITH OUR
KIT THAT ACCOMODATES MANY OF THE
DISCONNECT OPERATING HANDLES
AVAILABLE, BUT IT WILL BE UP TO YOU TO
CHOOSE THE ONE THAT WORKS BEST FOR
YOUR APPLICATION.
4. -INSERT (ASSEMBLY 3) WITH 1/4-20 NUT ON
THE STUD ADJACENT TO THE DOOR HANDLE,
SLIDE IT ALL THE WAY TO THE FLANGE AND
TIGHTEN.
5. -INSTALL THE DEFEATER HOOK
(ASSEMBLY 4) TO THE DOOR, AND ADJUST
THE HEIGHT OF THE HOOK SO THAT IT
WILL CLOSE OVER THE DEFEATER WITH
THE DISCONNECT HANDLE IN THE OFF
POSITION, ABOUT 1/8 INCH CLEARANCE.
MECHANICAL DEFEATER INSTALLATION
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6. -NOW YOU CAN ADJUST THE MDV.
WITH THE DISCONNECT OPERATING
HANDLE STILL IN THE “OFF” POSITION
SIMPLY PULL THE CABLE DRAWING
DEFEATER STRIKE DOWN SO THAT
THERE IS ABOUT A 3/8 INCH BETWEEN
THE DEFEATER AND THE DEFEATER
STRIKE AND TIGHTEN THE SCREW TO
LOCK IN POSTION.
7. -CLOSE THE DOOR AND DOOR
HANDLE FULLY AND THE OPERATING
HANDLE SHOULD BE DEFEATED TO
TURN THE DISCONNECT TO THE “ON”
POSITION. VERIFY THEN THAT DOOR
ENGAGES THE HOOK WHEN YOU TRY
TO OPEN THE DOOR.
NOTE: IF THE DISTANCE BETWEEN THE
BOTTOM HOLE OF THE DISCONNECT
AND THE MOUNTING STUD FOR THE
MDV ARE LESS THAN 5-1/2 INCHS THE
SELF-TRIPPING HOOK PROVIDED WITH
THE DISCONNECT OPERATING HANDLE
MUST BE USED.
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